Fireproof construction.



Patented Mar. s, |900.' A. L A. HIMMELWRIGHT. FIREPRUF CONSTRUCTION.

(Application filed Aug. 3L 189.8.)

No. 644,9I4.

(Hu Model.)

mi V

Unirse Prien..

ABRAHAM L. A. HIMMELW'RIGHT, OF NEWARK, NEW JERSEY, ASSIGNOR TO THE NEV JERSEY TIRE CLOTH COMPANY, OF TRENTON, NEV JERSEY.

FIREPROOF CONSTRUCTION.

SPECIFICATION forming part of Letters Patent No. 644,914, dated March G, 1900.

Application tiled August 31| 1893.V Serial No. 689,915. (Nomodeh) T all went t may concern,.-

Be it known that I, ABRAHAM L. A. HIM

Y MELWRIGHT, a citizen of the United States,

ent invention being to provide an improved y floor construction of this class which shall possess the desired strength and iireproot' 2o quality, while at the same time employing light metal parts anda small body of concrete. Afurther object of the invention is to provide aconstruction of this class with improved means for fireprootng beams or girders with a z body of concrete or similar plastic material. As a full understanding ot' the invention can bestbe given, by a detailed description ot a construction embodying the same, such a description will now be given in connection 3o with the accompanying drawings, forming a part of this specification and showing iioor and ceiling constructions of preferred forms embodying the invention, andthe features forming theinvention will then be specifically 55 pointed out in the claims.

In the drawings, Figure 1 is a section of the construction, taken transversely to the Hoor-beams. Fig. 2 is a cross-section of the same, showing a girder construction, the lath- 4o ing and concrete being shown partially removed from the iioorfor the purpose ot' illustration. 3 is a section on the line 3 of Fig. 2, with the licor-concrete removed. Fig. 4c is a view similar to Fig. 1, showing a modiiied construction. Fig. isa planview, partly in section, of the construction shown in Fig. 4, omitting the concrete and lathing. Fig. 6 is a detail view of the Spanner shown in Fig. 5. Referring especially to Figs. 1 to 3, A are 5o the iloorbeams, which are shown as of the common I form, these beams A being shown as supported by girders B, to which they are connected at their ends by angle-plates 10,

as usual, or in any other suitable manner, and these beamsAare shown as tied together by tie-rods 11, passing through the webs of the beams and provided with nuts l., so that the beams are held rmly against sidewise pressure. It will be understood, however, that these tie-rods may be omitted.

From the upper flanges of the beams A are supported metal joists C, which consist of fiat metal plates of the required thickness larranged edgewise vertically and having their' opposite ends formed with a quarter-twist, so that the ends 12 lie at. right anglesto the main portion of the j oists, and these ends 12 are bent upward and extend over the tops of the beams, upon which they rest iiatwise, and are provided with hooks 2, hooked over the 7o anges of the beams, so as to be held thereby. The joists C may thus be positioned in any desired plane below the tops of the beams, according to the length of the vertical portion of their bent ends, and the dat `portions ofthe ends resting upon the tops of the beams'hold the joists in position, with the body of the joists standing edgewise, as shown. By the hooking of the ends of the j oists over the flanges of the beams also the joists act as tie- 8o bars for the beams. With these joists Clare preferably used spanners, as shown in Fig. 1' and in detail in Fig. 5, these spanners aiding in holding the joists in proper position and enabling them to be rapidly and accurately spaced 8 5 in building the construction. The spanners consist of a metal rod 13 of any suitable form corresponding in length to the distance at which the joistsare to be spaced, these rods 13 having at opposite ends loops 14, forming 9o hooks adapted to embrace and rest upon the top edges of the joists C, thus holding the lat-- ter in position and securing uniform spacing of the joists. Spanners of this form are very simple and cheap, no long pieces of metal being required, so that they may be made from waste pieces of metal rods.

The joists C support the reticulated metal which forms the anchorage for the concrete or similar plastic material of the iioor con- Ioo struction. The reticulated metal is shown as common metallic lathing 15, of wire-netting,

and this is the preferred construction, but the reticulated metal may be of any other suitable form and mesh, either of woven or netted wire or metal rods or straps or perfo roted or expanded metal, so that the concrete or similar plastic material applied from above will set into the openings between the parts of the reticulated metal and secure the desired anchorage of the concrete. This lathing 15 or other retieulated metal may be secured to and supported bythe joists C in any suitable manner, but is shown as secured thereto by wire ties 3 at suitable intervals. The lathing 15 does not extend to the webs of the beams, but is terminated a short distance therefrom, according to the thickness of the body of concrete that is to be applied to the webs of the beams for tireprooting the latter.

In connection with iireproong the webs and bottoms of the beams A, I preferably use the construction shown, in which the bent rods 16 are hooked over the joists C on op* posite sides of the beams and extend downward and under the bottoms of the beams A, these rods 16 being arranged at suitable intervals, as shown in Fig. 3. Below the beams are supported,partly by these rods 16 and .partly by hangers ct, rods 17, extending lon- ,gitudinally of and on opposite sides ofthe beams, and to the rods 16 17 is secured, so as to be held in position thereby, reliculated metal 18, shown as metallic lathing of the same form as lathing 13, which extends from the joists C on one side of the beams downward and around the bottom of the beams .and upward to the joists on the opposite side lof the beam, thus inc-losing on the sides and ,bottom the space between the ends of the lathing 13 on opposite sides of the beams.

vThe hangers a, by which the horizontal rods ,17 are partially supported and held in position, are preferably formed, as shown, of ya flat vpiece ofmetahwhich is slit at the opposite ends, so that the body of the hanger rests upon the under side of the beam, and a portion of each end is bent upward and over the flange of the beam to form holding clips or flanges 4, and the other portions of the ends are bent downward, so as to form depending arms 5, provided with hooks, forming seats for the rods 17.

After the metallic parts have been placed in position, as above described and as shown in Figs. 1 to 3, a lilling of concrete orsimilar plastic material D is applied from above, lilling all the space above the lathing 15 or other reticulated metal, embedding the joists C and their supporting vertical portions 12, and preferably extending level with the tops of the beams, as shown, and seating through the openings of the metal 15, so as to secure the desired anchorage thereon, this concrete also being packed down through the spaces between the rods 16, the lathin g or other reticulated metal 18, and the webs of the beams, and beneath the beams and girders, so as to till the space within the metal 18, thus forming an integral body of concrete or similar plastic material which extends in a web of the desired thickness from beam to beam and around the webs of the beams and forms a body of iireprooting below the flanges of the beams. All the space below the bottoms of the beams is preferably filled with concrete, as shown; but the construction may be so modified as to form an air-space below the bottoms of the beams between the beams and the concrete under the beams, if desired. This lioor construction of concrete or similar plastic material preferably eX- tends level with the tops of the beams A, as above stated andas shown in Fig. 1, and upon it the flooring E maybe applied directly; but the iioorin g is preferably supported thereonI by wooden or other joists F, as shown. This floor construction is complete in itself and may be used with beams supported in this or any other suitable manner and girders and girder protection of any desired form. In girder constructions, however, I preferablyprotect the girders throughout bya body of concrete or similar plastic material continuous With the flooring-concrete D and eX- tend-this body ot' concrete or similar plastic material also below the bottoms of the girders, so as to provide a lireproof protection below the girders, and such a protected-girder construction is shown, In this construction, as shown in Figs. 2 and 3, the wirelathing or other reticulated metal 15 18 does not eX- tend to the ends of the beams A, but terminates at a distance from the girders B ac'- cording to the thickness of girder fireprooting desired, anduponthe joists C, adjacent to and on opposite sides of the girder B, are hung at suitable intervals hooked rods 19, which extend downward below the flange of the girder sufficiently to provide the desired thickness of iireprooiing material below the IIO girder-flange, and in connection with these l rods 19 are arranged horizontal rods 20, supported partially by rods 19 and partially by hangers a on the bottom flanges of the girdv ers, which are shown as similar in construction to those previously described in connection with the beams A. To these rods 19 and the horizontal rods 20 is secured wire lathing or other reticulated metal 21, which practically forms a continuation of the metal 15 downward on opposite sides of the web of the girder B, so that the concrete or similar plas tic material D may be packed within this metal 21 for iireprooiing the girders, and thus a continuous body of concrete extends from the llooring about and below the girders, as shown.

In the construction shown the girder B eX- tends above the beams A and the concrete D is extended upward immediately about the girder tothe top of the latter, so as to tireproof the web and under side of the iiange of the girder, the flooring E then being supported above the top of the girder by the joists F.

. The construction of tireproot floor and girder protection thus far 'described is complete in itself and may be used without a ceiling or with a plaster ceiling applied directly to the under side ot the metal 15 18 21 or with a suspended ceiling of any suitable form. As shown, the floor and ceiling construction is integral, the plaster inish being applied directly to the under side of the metal 15 18 21, the concrete D or similar plastic material projecting through the openings in this lathing or other reticulated metal, so as to form an efficient base for the plaster.

In Fig. 4 I have shown a modified construction, which is the same as that shown in Fig. 1, except that the joists (l arenot dropped below the tops oil the beams, but the ends formed by a quarter-tum of the joists, so as to bring the joists latwise to the tops ot' the beams, are extended straight. across the top flanges of the beams, so that with the hooks 2 on these straight ends 22 hooked over the flanges of the beams, as in the construction shown in Fig. 1, the beams A are tied tolgether by a straight bar extending from beam toY beam. With this construction the beams are efficiently tied togethelgso that it will be found in practice that no other tie-rods are necessary, a very strong construction .thus being formed. 1

Itwll be understood that many modifications maybe made in the constructions shown by those skilled in the art without departingfrom the invention and that I am not to be limited to the exact form or `arrangem ent ot' parts in the constructions shown.

What is claimed is- 1. The combination with ilanged beams, of metal joists extending frombeam to beam and supported from the tops of the beams and dropped below the flanges of the beams, re'- ticulated metal between the beams and vextending downward near the beams and about the bottoms of the beams with space between the metal and beams, and a body of concrete or similar plastic materialv applied from above on said reticulated metal and forming a fireprooi web between the beams and iireproofing about and below the bottomanges of the beams, substantially as described.

2. The combination with flanged beams, of joists formed ot' metal plates extending from beam to beam and placed edgewise vertically and twisted near the ends to form portions lying flatwise to the beam and hooked over the top llan ges of the beams, reticulated metal between the beams and extending downward near the beams and about the bottoms of the beams with space between the metal and beams, and a body ot' concrete or similar plastic material applied on said reticulated the beams and reproofing about and below the bottom flanges ofthe beams,substantially as described.

The combination with flanged beams, of joists formed of metal plates extending from beam to beam and placed edgewise vertically and twisted near the ends to formportions lying latwise to the beam and bent upward and hooked over the top flanges of the beams whereby the joists are dropped below the beam-flanges, reticulated metal between the beams and extending downward near the beams and about the bottoms of the beams with space between the metal and beams, and a body of concrete or similar plastic material applied on said reticulated metal and forming a reproof web between the beams and tireproong about and below the bottom flanges of the beams, substantially as described.

4. The combination with girders and trans- Verse beams supported thereby, of joists formed of metal plates extending from beam to beam and placedV edgewise vertically and twisted near the ends to form portions lying ilatwise to the beam and hooked over the top flanges of the beams, reticulated metal be` tween the beams and extending downward near the beams and about the bottoms of the beams with space between the metal and i 5. The combination with the beams A, of

loo

the flat metal Vbars C placed edgewise verti- Y cally and twisted at the ends to form portions lying ilatwise to the beams and hooked. over the tops of the beams, substantially as described.,v

(i. The combination with the beams A, of the flat metal bars C placed edgewise vertically and twisted at the endsto form portions lying latwise to the beams and bent upward and thenover the top llanges of the beams and hooked around said flan ges, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

v ABRAHAM L. A. llllllllIELWltlGll'l.

Witnesses:

C. J. SAWYER, A. L. KENT. 

